Tuesday, February 16, 2010


Used coffee grounds are a fertilizer for your plants and a great addition to Compost piles. You may add them to either existing or brand new plant beds.

Many gardeners compost their leaves, grass clippers and trimmings from their yard. The soil can be improved and more productive by mixing organic matter into the soil. Kitchen waste such as vegetable scraps, coffee grounds, tea leaves and eggshells may be added to the compost pile. Coffee grounds added to the compost pile help maintain the nitrogen balance which is import for decomposition of the organic materials in compost.

Coffee grounds can be applied directly to acid loving plants like blueberries, hydrangeas, azaleas, roses and tomato plants. Ground coffee is high in nitrogen, making it a good mulch for fast growing vegetables. Coffee contains a number of substances that promote healthy plant growth. Work coffee grounds into the soil so that they don’t form a crust on the top.

Coffee grounds are a source of nitrogen, calcium and magnesium. These nutrients are beneficial to the plants in your garden. Using the grounds is an environmentally friendly and cost effective way to nourish plants.

Increase carrot and radish harvest by mixing seeds with dry coffee grounds before planting the seed.

Coffee grounds may be used on indoor plants too or use left over coffee to water indoor plants.

An analysis of coffee grounds was performed in 1995 by the University of Washington, College of Forest Resources, the

Primary Nutrients are:
Nitrogen 1.45%
Phosphorus not a significant amount
Potassium 1204 UG/G

Secondary Nutrients
Calcium 389 UG/G
Magnesium 448 UG/G
Sulfur high UG /G

Terms: UG/G=microgram/gram

In summary, coffee grounds can lower pH and add organic matter to soil. Coffee grounds can be sourced from your home or you may be able to find used grounds at your local restaurant or coffee shop.

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